Calculation of ferrite decarburizing depth, considering chemical composition of steel and heating condition

The calculation of ferrite decarburizing depth considering the effects of t he chemical composition of steel and heating condition was attempted using a diffusion model and its propriety was confirmed by comparing with the exp erimental results. The calculation values of ferrite decarburizing depth we re almost the same as the experimental values under most heating conditions , which indicates that the model is appropriate for simulation of the ferri te decarburizing depth considering the steel composition and heating condit ion. Only in the case where steel with a high proportion of titanium, vanad ium and chromium was heated to under 973 K, did the ferrite decarburizing d epth of the experiment show lower values than that of the calculation. It w as speculated that small MC carbides as TiC or VC and chromium which stabil izes cementite affected the formation of ferrite decarburizing area.